A monitoring and early warning device for the temperature of power transformers
By combining a lifting mechanism and a temperature sensor, the problems of inaccurate and unstable temperature monitoring of power transformers are solved, enabling real-time accurate early warning and stable detection, ensuring safe operation of the equipment and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING GUANGYUTONG TECH CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-26
AI Technical Summary
In existing technologies, temperature monitoring of power transformers is not accurate enough, which leads to a high risk of insulation aging, partial discharge and short circuit explosion, and the instability of temperature detection affects the safe operation and lifespan of the equipment.
A monitoring and early warning device including a lifting mechanism and a temperature sensor was designed. The lifting mechanism drives the sensing element to contact the inside of the power transformer box. Combined with the processor module, it realizes real-time temperature monitoring and early warning. The spring structure ensures that the sensing element maintains stable contact when the transformer shakes.
It enables accurate monitoring and stable early warning of power transformer temperature, reduces equipment failure risk, extends service life, and improves the stability of temperature detection.
Smart Images
Figure CN224286157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power transformer technology, and in particular to a monitoring and early warning device for the temperature of power transformers. Background Technology
[0002] As a core piece of equipment in the power system, power transformers play a vital role in voltage transformation, power distribution, and the stable operation of the power grid. Statistics show that transformer failures account for over 30% of all power grid accidents, and abnormal temperature is one of the main causes of transformer insulation aging, partial discharge, and even short-circuit explosions.
[0003] According to Arrhenius's law, the aging rate of transformer insulation materials increases exponentially with increasing temperature, and their lifespan is reduced by half for every 6-8°C increase. Therefore, real-time monitoring of transformer temperature and accurate early warning are of great significance for ensuring safe equipment operation and extending service life. To this end, we have designed a monitoring and early warning device for the temperature of power transformers. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a monitoring and early warning device for the temperature of power transformers.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A monitoring and early warning device for the temperature of a power transformer includes a base plate, an outer shell fixedly connected to the upper surface of the base plate, a top plate fixedly connected to the top of the outer shell, a lifting mechanism fixedly installed on the lower surface of the top plate, a monitoring mechanism fixedly connected to the output end of the lifting mechanism, the lifting mechanism being used to adjust the lifting position of the monitoring mechanism, the bottom detection end of the monitoring mechanism penetrating and extending to the outside of the base plate, and a processor module fixedly installed inside the base plate.
[0007] Preferably, the lifting mechanism includes a mounting base, a lead screw rotatably connected to the outer wall of the mounting base, a movable nut threadedly connected to the outer wall of the lead screw, a sliding plate fixedly connected to the outer wall of the movable nut, a support bar provided on one side of the lead screw, the top end of the support bar fixedly connected to the lower surface of the top plate, the bottom end of the support bar fixedly connected to the upper surface of the bottom plate, the sliding plate slidably connected to the support bar, a connecting piece fixedly connected to the outer wall of the sliding plate, a rotating block fixedly connected to the top of the lead screw, an irregular groove formed on the upper surface of the rotating block, and an opening formed at the rotating block on the top plate.
[0008] Preferably, a horizontal plate is fixedly connected to the bottom of the support bar, a bearing seat is fixedly installed on the outer wall of the horizontal plate, and the other end of the lead screw is fixedly sleeved with the bearing seat.
[0009] Preferably, the monitoring mechanism includes a telescopic rod with an internal mounting groove. A temperature sensor is fixedly mounted on the telescopic rod at the mounting groove. One end of the temperature sensor is fixedly connected to a connecting wire, and the other end of the connecting wire is fixedly connected to a sensing element. The sensing element is located at the bottom of the telescopic rod. A connecting ring is fixedly sleeved on the outer wall of the middle part of the telescopic rod, and the connecting ring is fixedly connected to a connector.
[0010] Preferably, a guide cylinder is fixedly connected to the lower surface of the top plate, the telescopic rod is slidably sleeved with the guide cylinder, and a cable routing hole is provided on the upper part of the guide cylinder.
[0011] Preferably, the connector includes a U-shaped component, with a slide rod fixedly connected to the inner wall of the U-shaped component, a slider slidably sleeved on the outer wall of the slide rod, the slider being fixedly connected to the outer wall of the connecting ring, and a spring sleeved on the outer wall of the slide rod, the top end of the spring contacting the U-shaped component, and the bottom end of the spring contacting the slider.
[0012] Preferably, a sealing sleeve is slidably fitted onto the bottom outer wall of the telescopic rod, the sealing sleeve is fixedly fitted onto the base plate, and a sealing ring is fixedly installed on the inner wall of the sealing sleeve, the sealing ring being in contact with the outer wall of the telescopic rod.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. In this utility model, the lifting mechanism drives the telescopic rod to move downward through the connecting ring, and the telescopic rod drives the sensing element to move downward. The bottom of the sensing element contacts the clamp inside the power transformer tank. The sensing element is used to detect the temperature conducted by the clamp inside the power transformer tank. At the same time, the temperature sensor is connected to an external processor module. The temperature sensor transmits the detected temperature signal to the processor module. The wireless communication module in the processor module transmits the detected temperature signal to the application end, which can monitor the transformer temperature in real time and realize accurate early warning.
[0015] 2. In this utility model, the slider is subjected to the pressure of the spring. The spring pushes the telescopic rod downward through the slider. When the power transformer is affected by external wind force, causing the entire power transformer to shake, the spring will always generate a downward thrust on the monitoring mechanism. This ensures that when the sensing element detects the temperature inside the power transformer tank, the contact end of the sensing element can always be in contact with the clamps inside the power transformer tank. This prevents the shaking of the power transformer from affecting the position of the sensing element, which could lead to poor contact between the contact end of the sensing element and the clamps inside the power transformer tank, resulting in unstable monitoring. This improves the stability of temperature monitoring. Attached Figure Description
[0016] Figure 1This is a schematic diagram of the structure of a monitoring and early warning device for the temperature of a power transformer according to the present invention.
[0017] Figure 2 This is a schematic diagram of the lifting mechanism of a power transformer temperature monitoring and early warning device according to the present invention.
[0018] Figure 3 This is a schematic diagram of the connection component of a power transformer temperature monitoring and early warning device according to the present invention.
[0019] Figure 4 This is a right view of a monitoring and early warning device for the temperature of a power transformer according to the present invention.
[0020] Figure 5 This is a left view of a monitoring and early warning device for the temperature of a power transformer according to the present invention.
[0021] Figure 6 This is a left view of a connector of a power transformer temperature monitoring and early warning device according to the present invention.
[0022] Figure 7 This is a schematic diagram of the mounting base for a power transformer temperature monitoring and early warning device according to the present invention.
[0023] Figure 8 This is a schematic diagram of the rotating block and irregular groove of a temperature monitoring and early warning device for power transformers according to the present invention.
[0024] Figure 9 This is a schematic diagram of the monitoring mechanism of a power transformer temperature monitoring and early warning device according to the present invention.
[0025] The diagram is labeled as follows: 1. Base plate; 2. Outer shell; 3. Top plate; 301. Opening; 4. Lifting mechanism; 401. Mounting base; 402. Lead screw; 403. Rotating block; 4031. Irregular groove; 404. Moving nut; 405. Slide plate; 406. Support bar; 407. Connector; 4071. U-shaped part; 4072. Slide rod; 4073. Slider; 4074. Spring; 408. Horizontal plate; 409. Bearing seat; 5. Monitoring mechanism; 501. Telescopic rod; 502. Mounting groove; 503. Temperature sensor; 504. Connecting wire; 505. Sensing element; 506. Connecting ring; 507. Sealing sleeve; 508. Guide cylinder; 509. Cable routing hole; 6. Processor module. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] As attached Figure 1 To be continued Figure 9 As shown:
[0028] A monitoring and early warning device for the temperature of a power transformer includes a base plate 1, an outer shell 2 fixedly connected to the upper surface of the base plate 1, a top plate 3 fixedly connected to the top of the outer shell 2, a lifting mechanism 4 fixedly installed on the lower surface of the top plate 3, a monitoring mechanism 5 fixedly connected to the output end of the lifting mechanism 4, the lifting mechanism 4 being used to adjust the lifting position of the monitoring mechanism 5, the bottom detection end of the monitoring mechanism 5 penetrating and extending to the outside of the base plate 1, and a processor module 6 fixedly installed inside the base plate 1.
[0029] As attached Figure 1 To be continued Figure 8 As shown, the lifting mechanism 4 includes a mounting base 401. A lead screw 402 is rotatably connected to the outer wall of the mounting base 401. A movable nut 404 is threadedly connected to the outer wall of the lead screw 402. A sliding plate 405 is fixedly connected to the outer wall of the movable nut 404. A support bar 406 is provided on one side of the lead screw 402. The top end of the support bar 406 is fixedly connected to the lower surface of the top plate 3, and the bottom end of the support bar 406 is fixedly connected to the upper surface of the bottom plate 1. The sliding plate 405 is slidably connected to the support bar 406. A connector 407 is fixedly connected to the outer wall of the sliding plate 405. A rotating block 403 is fixedly connected to the top of the lead screw 402. A groove 4031 is provided on the upper surface of the rotating block 403. An opening 301 is provided on the top plate 3 at the location of the rotating block 403. A horizontal plate 408 is fixedly connected to the bottom of the support bar 406. A bearing seat 409 is fixedly installed on the outer wall of the horizontal plate 408. The other end of the lead screw 402 is fixedly sleeved with the bearing seat 409.
[0030] In the above technical solution, a through hole is opened on the outer wall of the power transformer, and the base plate 1 is fixedly welded to the through hole on the outer wall of the power transformer. An L-shaped wrench is inserted into the irregular groove 4031, and the L-shaped wrench drives the rotating block 403 to rotate. The rotating block 403 drives the lead screw 402 to rotate. The lead screw 402 drives the sliding plate 405 to move downward through the moving nut 404. The sliding plate 405 drives the connecting piece 407 to move downward. The connecting piece 407 drives the monitoring mechanism 5 to move downward.
[0031] The monitoring mechanism 5 includes a telescopic rod 501, with an installation groove 502 inside the telescopic rod 501. A temperature sensor 503 is fixedly installed on the telescopic rod 501 at the installation groove 502. One end of the temperature sensor 503 is fixedly connected to a connecting wire 504, and the other end of the connecting wire 504 is fixedly connected to a sensing element 505. The sensing element 505 is located at the bottom end of the telescopic rod 501. A connecting ring 506 is fixedly sleeved on the outer wall of the middle part of the telescopic rod 501, and the connecting ring 506 is fixedly connected to the connector 407. A guide cylinder 508 is fixedly connected to the lower surface of the top plate 3. The telescopic rod 501 and the guide cylinder 508 are slidably sleeved. A cable routing hole 509 is opened on the upper part of the guide cylinder 508.
[0032] In the above technical solution, the connector 407 drives the telescopic rod 501 to move downward through the connecting ring 506, and the telescopic rod 501 drives the sensing element 505 to move downward. The bottom of the sensing element 505 contacts the clamp inside the power transformer's enclosure. The sensing element 505 is used to detect the temperature conducted by the clamp inside the power transformer's enclosure.
[0033] It is worth mentioning that the processor module 6 includes a control module and a wireless communication module. The control module, wireless communication module, and temperature sensor 503 in this case can all be conventional products in the prior art, and all are externally powered. They are mature technologies in the field and have been fully disclosed. For example, the wireless communication module can be the Siemens MC39I module, which can transmit data through the GSM network provided by the user inserting the mobile phone SIM card into the card slot; the control module can be the STM32F103 microprocessor; and the temperature sensor 503 can be the WZPK-230N temperature sensor. Therefore, it will not be repeated in the specification.
[0034] Meanwhile, the temperature sensor 503 is connected to the external processor module 6. The temperature sensor 503 transmits the detected temperature signal to the processor module 6. The wireless communication module in the processor module 6 transmits the detected temperature signal to the application end, thereby realizing the early warning function.
[0035] As attached Figure 2 To be continued Figure 9 As shown, the connector 407 includes a U-shaped part 4071. A slide rod 4072 is fixedly connected to the inner wall of the U-shaped part 4071. A slider 4073 is slidably sleeved on the outer wall of the slide rod 4072. The slider 4073 is fixedly connected to the outer wall of the connecting ring 506. A spring 4074 is sleeved on the outer wall of the slide rod 4072. The top end of the spring 4074 contacts the U-shaped part 4071, and the bottom end of the spring 4074 contacts the slider 4073.
[0036] In the above technical solution, the slider 4073 is subjected to the pressure of the spring 4074. The spring 4074 pushes the telescopic rod 501 downward through the slider 4073. When the power transformer is affected by external wind, causing the entire power transformer to shake, the spring 4074 will always generate a downward thrust on the monitoring mechanism 5. This ensures that when the sensing element 505 detects the temperature inside the power transformer's enclosure, the contact end of the sensing element 505 can always be in contact with the clamps inside the power transformer's enclosure. This prevents the shaking of the power transformer from affecting the position of the sensing element 505, which could lead to poor contact between the contact end of the sensing element 505 and the clamps inside the power transformer's enclosure, resulting in unstable monitoring. This improves the stability of temperature monitoring.
[0037] A sealing sleeve 507 is slidably sleeved on the bottom outer wall of the telescopic rod 501. The sealing sleeve 507 is fixedly sleeved with the base plate 1. A sealing ring is fixedly installed on the inner wall of the sealing sleeve 507, and the sealing ring is in contact with the outer wall of the telescopic rod 501.
[0038] The specific usage and function of this embodiment are as follows:
[0039] In use, a through hole is made in the outer wall of the power transformer, and the base plate 1 is fixedly welded to the through hole in the outer wall of the power transformer. An L-shaped wrench is inserted into the irregular groove 4031, and the L-shaped wrench drives the rotating block 403 to rotate. The rotating block 403 drives the lead screw 402 to rotate. The lead screw 402 drives the sliding plate 405 to move downward through the moving nut 404. The sliding plate 405 drives the connecting piece 407 to move downward. The connecting piece 407 drives the telescopic rod 501 to move downward through the connecting ring 506. The telescopic rod 501 drives the sensing element 505 to move downward. The bottom of the sensing element 505 contacts the internal clamp of the power transformer box. The sensing element 505 is used to detect the temperature conducted by the clamp on the inside of the power transformer box.
[0040] Meanwhile, the temperature sensor 503 is connected to the external processor module 6. The temperature sensor 503 transmits the detected temperature signal to the processor module 6, and the wireless communication module in the processor module 6 transmits the detected temperature signal to the application end.
[0041] The slider 4073 is subjected to the pressure of the spring 4074. The spring 4074 pushes the telescopic rod 501 downward through the slider 4073. When the power transformer is affected by external wind, causing the entire power transformer to shake, the spring 4074 will always generate a downward thrust on the monitoring mechanism 5. This ensures that when the sensing element 505 detects the temperature inside the power transformer's enclosure, the contact end of the sensing element 505 can always be in contact with the clamps inside the power transformer's enclosure. This prevents the shaking of the power transformer from affecting the position of the sensing element 505, which could lead to poor contact between the contact end of the sensing element 505 and the clamps inside the power transformer's enclosure, resulting in unstable monitoring. This improves the stability of temperature monitoring.
[0042] Please refer to the above structure and process. Figure 1-9 .
[0043] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A monitoring and early warning device for the temperature of a power transformer, comprising a base plate (1), characterized in that, The upper surface of the base plate (1) is fixedly connected to the outer shell (2), the top of the outer shell (2) is fixedly connected to the top plate (3), the lower surface of the top plate (3) is fixedly installed with a lifting mechanism (4), the output end of the lifting mechanism (4) is fixedly connected to a monitoring mechanism (5), the lifting mechanism (4) is used to adjust the lifting position of the monitoring mechanism (5), the bottom detection end of the monitoring mechanism (5) penetrates through and extends to the outside of the base plate (1), and the processor module (6) is fixedly installed inside the base plate (1). The lifting mechanism (4) includes a mounting base (401), a lead screw (402) is rotatably connected to the outer wall of the mounting base (401), a movable nut (404) is threadedly connected to the outer wall of the lead screw (402), a sliding plate (405) is fixedly connected to the outer wall of the movable nut (404), a support bar (406) is provided on one side of the lead screw (402), the top end of the support bar (406) is fixedly connected to the lower surface of the top plate (3), the bottom end of the support bar (406) is fixedly connected to the upper surface of the bottom plate (1), the sliding plate (405) is slidably connected to the support bar (406), a connector (407) is fixedly connected to the outer wall of the sliding plate (405), a rotating block (403) is fixedly connected to the top of the lead screw (402), a groove (4031) is provided on the upper surface of the rotating block (403), and an opening (301) is provided on the top plate (3) at the rotating block (403). The monitoring mechanism (5) includes a telescopic rod (501), and an installation groove (502) is provided inside the telescopic rod (501). A temperature sensor (503) is fixedly installed on the telescopic rod (501) at the installation groove (502). A connecting wire (504) is fixedly connected to one end of the temperature sensor (503), and a sensing element (505) is fixedly connected to the other end of the connecting wire (504). The sensing element (505) is located at the bottom end of the telescopic rod (501). A connecting ring (506) is fixedly sleeved on the outer wall of the middle part of the telescopic rod (501), and the connecting ring (506) is fixedly connected to the connector (407).
2. The monitoring and early warning device for the temperature of a power transformer according to claim 1, characterized in that, A horizontal plate (408) is fixedly connected to the bottom of the support bar (406), and a bearing seat (409) is fixedly installed on the outer wall of the horizontal plate (408). The other end of the lead screw (402) is fixedly sleeved with the bearing seat (409).
3. The monitoring and early warning device for the temperature of a power transformer according to claim 2, characterized in that, The lower surface of the top plate (3) is fixedly connected to a guide cylinder (508), the telescopic rod (501) is slidably sleeved with the guide cylinder (508), and the upper part of the guide cylinder (508) is provided with a cable routing hole (509).
4. The monitoring and early warning device for the temperature of a power transformer according to claim 3, characterized in that, The connector (407) includes a U-shaped part (4071), a slide rod (4072) is fixedly connected to the inner wall of the U-shaped part (4071), a slider (4073) is slidably sleeved on the outer wall of the slide rod (4072), the slider (4073) is fixedly connected to the outer wall of the connecting ring (506), a spring (4074) is sleeved on the outer wall of the slide rod (4072), the top end of the spring (4074) is in contact with the U-shaped part (4071), and the bottom end of the spring (4074) is in contact with the slider (4073).
5. A monitoring and early warning device for the temperature of a power transformer according to claim 3, characterized in that, A sealing sleeve (507) is slidably sleeved on the bottom outer wall of the telescopic rod (501). The sealing sleeve (507) is fixedly sleeved with the base plate (1). A sealing ring is fixedly installed on the inner wall of the sealing sleeve (507). The sealing ring is in contact with the outer wall of the telescopic rod (501).